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Dell Optiplex 755 Desktop power supply replacement.

Q: Dell Optiplex 755 Desktop power supply replacement.

I have a Dell Optiplex 755 that has a stock 280 watt psu, I would like to upgrade this to a 550 watt psu. I know the computer uses a smaller form factor psu and because of that I am having a hard time finding a replacement. Is there anyone who has done this, if so what was the model that fit?
I would love to hear any success stories.
Thank you in advance.

Preferred Solution: Dell Optiplex 755 Desktop power supply replacement.

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A: Dell Optiplex 755 Desktop power supply replacement.

The tower on the left is easy to do, the Desktop you need to shoehorn an aux power supply inside by removing the Optical drive. For the SFF and USFF this is completely Impossible. The other issue is that Full size video cards will not fit into that case so the point is moot.
Genuine Dell 280W Power Supply PSU for Dimension C521 3100C and Optiplex Small Desktop Systems 210L 330 740 755 760 GX520 GX620 and New Style GX280 Part/Model Numbers NH429 MH596 P9550 F5114 U9087 X9072 N8374 NC912 MC638 KC672 M8803 K8965 L280P-01 D280P-00 H280P-00 AA24120LSFF Power Supply Dell Part Number: RM117

Thermaltakeusa » Accessories » Drive Bay » Toughpower Power ...

Power Express 450W

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I was wondering what replacement options there are for this unit. I've asceratined from checking posts that not being able to boot up and a flashing orange power light indicate the possibility of death and this, accompanied by a fortnight of power surge warnings on the isb hub convince me time's up It's a second machine but I'd really like to maintain access to the programs I've loaded. The posts indicate the the quality of components in this machine is pretty ordinary so a non-Dell solution would be good.

A:Solved: Replacement Optiplex 745 power supply

I've had good luck with these guys:
There's also a lengthy list of Dell PS's here:
Email support is good also.
PS testers are cheap:

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I have an Optiplex 790 DT (i5 - 2nd gen. with 3.1 GHZ) and the gpu power supply on the motherboard is restricted to 35 W. My question is, if I could install a rather modern GPU (GTX 1050, RX 480, etc.), if I hook it up via a 6 pin power connector from my PSU (600 W)? Will that work or cause issues?Thank you for your help!

A:Dell Optiplex 790 GPU Power Supply

Unfortunately, they will not work in the 790. They require a StandardPCIE 3.0 bus spec as well as other specs the Optiplex 790 does not meet. The bus on the 790 is Bus type PCI 2.3PCI Express V2.0SATA 1.0A, 2.0 and 3.0USB 2.0 Bus speed PCI: 133 MB/sPCI Express x16-slot bidirectional speed - 8 GB/sx1- slot bidirection speed -SATA: 1.5 Gbps, 3.0 Gbps and 6.0 GbpsUSB: 480 Mbps

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I have an OptiPlex 755 Desktop with what I am assuming is a bad power supply.   My company has several other Dell Powersupplies, including the 755 Small Form Factor which is a different size.   Will any other Dell OptiPlex Power Supplies work?

A:Power Supply for Desktop OptiPlex 755

They wont work from GX620 for example.  The current ratings are different.  You need to use 755 psu's

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I am wanting to upgrade my power to at least 400 watt. I bought a power supply that is a EVGA 400 watt power supply and the pins did not match up with the motherboard in the 980. Does anyone know of a compatible power supply that is 400 watts or more?

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i have a dell otiplex 740.my power supply is over heated every time i run my desktop,i open it up and there is one tiny cable disconnect from the motherboard.this tiny cable leads to the power supply that has a cooling fan built inside the power supply.now i don't know were on the motherboard it belongs to.can any one help me with this issue.thanks

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I need a better power supply so I can add a better video card. The power supply that comes with my SDT is really small and long and only 210W. They don't make official power supplies with more watts.

I've heard that the 1u server power supplies are the same size and should work with my SDT if it is ATX12V compliant. My question is will the power supply from a Dell PowerEdge 850 work in my Optiplex SDT? The part number for the PowerEdge's power supply is T3504.

Is there anything I need to take into account (connectors etc.)?

I'm new at this and would greatly appreciate any help.



Dell Optiplex GX280 Manual
Dell PowerEdge 850 Manual
Forum post recommending 1u PS (post by xyphur)
Power Supply on Ebay I'm looking at

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yah the title explains it all I am looking for a 400watt PSU for a small desktop computer because I dont want to buy one and then dont have it fit


A:power supply unit for a dell optiplex gx270

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I replaced a busted power supply in my old XPS 420 (with a MasterCool MasterLite 600). Everything has seemingly gone wonderfully. However, during the replacement I had to remove the heat sink from the CPU to get to the cables. I've never really installed heat sinks before so I got some thermal paste a put a dot tried to put the heat sink back on and it didn't fall into place. When I removed the heat sink I noticed the paste hadn't covered all the CPU so I added a bit more to make sure. Then was successful the next time putting everything into place.
I'm really concerned I might have not done it correctly so I installed speedfan to check temperatures. For the CPU I'm getting temperatures of 80degC (just posting this post). Which seems high, but I remember checking speedfan a while back and have a faint recollection of the temperatures also seeming high before. Also the GPU is at a similar temperature and I didn't touch that.
I'm just wondering should I pull the heat sink off and do the thermal paste again or is this a non-issue and these computers just run that hot normally? 

A:Dell XPS 420 running hot (??) after Power supply replacement

I would redo the heatsink application, with Arctic Silver thermal compound.  Fully clean off the old thermal compound from both the top of the CPU and the bottom of the heat sink.
Here is the link to the Dell manual
 downloads.dell.com/.../xps-420_owner's manual_en-us.pdf

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I have a Dell OptiPlex GX280 mini-tower (smallest one thereis), and the original 160W power supply died a few months ago without warning. I ordered a new power supply, but accidentally ordered the wrong size (210W for one of the larger towers). I used it in the meantime until I could get the proper size (although the 210W supply wouldn’t fit in the mini case – I left it out of the case and ran the wires through the power plug hole). The computer booted up just fine with this 210W power supply. I finally got around to ordering the 160W smaller correct size, but that power supply would not boot up the computer (just got an amber flashing light). Thinking it was just faulty, I sent it back and requested a replacement. The replacement did not work either. I ordered a third replacement, and the third did not work either! So now I am back to using the 210W power supply (No. HP-U2106F3) which does not fit in the computer housing. I know these Dell OptiPlex machines are notorious for having power supply and capacitor issues. But the question is, why will the computer power on using the 210W power supply? I contacted Dell and they were of no help whatsoever. The guy told me that 160W wasn’t enough to power my machine and to order a 210W power supply correctly sized for my chassis. Gee, thanks! First of all, they don’t make 210W that fit in the mini towers, and second of all, why did it used to work just fine??? Oh, and no I have not upgraded anything (i.e., video card, etc.) which... Read more

A:Dell OptiPlex GX280 mini-tower power supply problem

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Hey folks,
Anyone know a good replacement power supply for the Dell Inspiron 546 mini tower (not slim tower)?  It says it is a 300W but from a lot of forum posts/reviews a lot of the replacements don't have long enough cables.  Anyone got any suggestions?
This Inspiron is from 2009 and the PSU has a green light on the power supply and an amber light on the motherboard but no power despite extensive troubleshooting (pulling out RAM, listening for beeps, testing PSU, etc).

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I want to add an audio card into my small form Inspiron 3268 desktop which I bought in June 2017. However, the power supply does not have a floppy connection for me to connect to my audio card. Can someone suggest a compatible power supply that I can replace? Thank you very much for your help. :)

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Wasn't sure if this is the right category but I guess it's ultimately a question of hardware...

In case you don't want to read the whole background, my ultimate question is, Which power supply should I look to get to replace the dead one in the old unit?

I just moved into an off-campus house at college and the last homeowners left behind a lot of stuff, including what appears to be a functional Dell desktop PC. At least 10 years old, judging by the available ports on the MB and the other hardware inside. The unit is dead on its own, but I tried connecting the 20-pin part of my desktop's power supply to the old unit and the motherboard seemed to power up (light went on, CPU fan started).

The hard drive and CD-ROM drive didn't seem to power on, but I found what seemed to be a safety button (see first image) which I am guessing prevents those devices from powering on if the case is open. Can anyone confirm this for me? I want to know if anything else in this unit is dead, but it seems like everything was in great shape (not much dust, etc). I don't really want to pump more than like $50 bucks into this thing, as my goal was to use this PC as either a dedicated Linux machine or to host a web site (not expecting much traffic at all, and with FiOS Quantum 75/75 we have more than enough bandwidth).

The motherboard looks very much like the Dell OptiPlex GX260 SDT SFF Socket 478 (Image: http://attach.forum.ge/post-54-1270667615.jpg) although I cannot seem to find the exa... Read more

A:Desktop Resurrection - Need power supply for 2002 Dell desktop


I have no idea if that model number is what you need, but it can be bought at the above link. 24 bucks, refurbished.

Google reveals other prices, most higher than $24.

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Please anybody can help me out?
I have dell inspiron 530 desktop.my computer does not start,when i plug in,the power supply in back side is on but,there is no green light on power button on front.

A:Dell Desktop inspiron 530 power supply problems.

Hi pat59,
Please remove the power cable, press and hold the Power button for 30 seconds. Connect the cable and switch on the computer check if it starts properly. If the computer is plugged into a power strip, ensure the power strip is plugged into an electrical outlet and is turned on. Also, bypass power protection devices, power strips, and power extension cables to verify the computer turns on properly.
Let me know your findings.

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Hi. This 24pix MINI atx power connector is basically the same as normal ATX connector (bur smaller of course)? At the pin settings is different? Where I can buy 24pix ATX to 24 pin MINI atx adapter that will work with those boards? Thanks.

A:Dell OptiPlex 760 (GX760) SFF and Dell OptiPlex 780 (GX780) SFF mainboard power connector?

Moddiy makes this.
Dell 980 960 780 760 PSU 24-Pin to Mini 24-Pin Adapter Cable (10cm)http://www.moddiy.com/products/Dell-980-960-780-760-PSU-24%252dPin-to-Mini-24%252dPin-Adapter-Cable-%2810cm%29.html

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I have a circa 2005 Dimension desktop that is starting to have issues powering up and booting on a "cold start", and wanted to confirm this is something that can be fixed by just installing a new power supply.
System is presently running Windows 7, and has been upgraded over the years with memory & disk drives, and otherwise works fine. Lately when I try to start the PC in the morning after it's been shutdown overnight, it acts as if the power is failing during boot up. The first attempt won't even boot into the BIOS. Simply unplugging the main power and then switching it back on again will get you further into the process each time; i.e., at try #2, BIOS will load, but when you exit BIOS and attempt to load Windows, it will power down. If I keep repeating this process (try #3, #4 and beyond), Windows will eventually get me to its startup repair & diagnostics mode, and will let me login to Windows 7.
Seems that the power supply may need some run time to warm itself up & stabilize before it can supply enough power to support all the electrical loads that occur during boot. Also, If I shutdown the PC in Windows, I can fire it right back up with no issues as long as I do that within 30 minutes of shutting it down.
Thoughts? Does this sound like a simple swap in a new PS fix?

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Hi Everyone,
I apologise if this has been asked previously, but i wasn't 100% clear in the other answers to this,
I have a Dell Inspiron 3847 desktop (not slim), purchased in Jan 2015. It has an intel core i5 4460 cpu and an INVIDIA Geforce GT 705 graphic card, 16gig DDR3 ram,
It has always run very quite, but just recently (within the last couple of weeks) i have noticed it making more sound then normal, it's soft but a constant high pitched sound which appears to be coming from the stock 300w psu,
If i wanted to change the psu, what make and model would be compatable?, sorry, but i am not really savy with voltages and figures etc, that is why i have asked purely for a make and model number that has been used in this model before, and would work,
From what i have read on this forum, a few people seem to have had issues with the stock psu after a period of time. Any recommendations would be greatfully appreciated, especially from users of the Inspiron that have upgraded their psu,

Thanks Again,
Mr Anthony

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Is this the correct power supply for the above system?

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After ordering a few power supplies(H235P-00) for some 760's I have, I got a message that Dell has no more of them and that they are EOL.
After searching around, I cannot find a compatible replacement part and cannot find any more information. I have over 40 of these PC's and it seems that the power supplies are at that age where they are close to failing. I have lost 3 in the past 2 months and I need to make a plan to keep these PC's running. Budget cuts are making it nearly impossible for me to purchase new hardware.

Does anyone have any insight into the status of this PSU?
Is there a compatible replacement that I can use that is not listed as compatible?
Does Dell plan to source this PSU out to 3rd party manufacturers so that we can get compatible PSU's in the future?

I's appreciate any help you could give.


A:Optiplex 760 SFF Power Supply EOL?

I used Google and found the following:

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anyone know how much power supply a Optiplex 755 small form computer provides>?
And if it's enough to support a Raeon HD 4350 Graphics card>?

According to anAndtech.com the radeon HD 4350 uses 170w idle and 190w at load but can the optiplex support that>?

A:Power Supply of Optiplex 755

I would try removing the PSU from the computer case and reading anything written on it. You might find the specs or a model number you can google. You might also be able to find the info in your BIOS.

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i have optiplex 760 sff pc . power led is bliniking amber . but if i press long on power supply reset button cahnged to green and bios started . if i leaft button its back to bliniking amber again

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i have searched the forum but have not been able to find anything that says it is ok to use a regular atx power supply in an optiplex 960 mini tower.  I have an 620 mini tower and it uses a regular atx but no info on the 960.  Anyone know if it is ok , or have to use dell only power supply

A:atx power supply with optiplex 960 mini tower

Optiplex 960 MT power supply upgrades

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Does anyone know if I can use standard ATX power supply with this computer It has 8pin + 4pin plugs and looks like it does't use standard connections. I want to replace the original SFF case and use a mini ATX one. If not possible can i use plug converter and in this case will I need converter for both 8 and 4 pin and where to find this.  

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Hi. I have a Dell Optiplex 960 mini tower computer that powers off when under too much load and I think the problem is due to overheating and a faulty power supply. Would appreciate feedback/advice. In troubleshooting I realized that the power supply fan never comes on - not when under a heavy performance load or even when at startup when I first press the power button (and I remember that it i used to hear the fan at power-on). I have two operating systems (Windows 8.1 and Win 10) each on it's own physical drive and the problem occurs on both. Specs:Dell Optiplex 960 Mini-Tower3.15 gigahertz Intel Core Duo Processor64 kilobyte primary memory cache6144 kilobyte secondary memory cacheBus Clock: 1333 megahertzVideo Card: AMD Radeon R5 200 SeriesDrive 0: Win 8.1Drive 1: Win 10Drive 2: cd-rom8gb ram255 watt dell power supplyIn the Windows Event Logs I can only find one event related to the power-offs. This event is almost always present after it happens: Event 41: The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.I tried two benchmark apps in the troubleshooting process: SpeedFan and OCCTSpeedFan: (In Windows 8.1) Starting temps before putting system under any significant loadBefore Significant Load Temps just before system powered off Drive 1 44C 43CDrive 2 35C 35CDrive 3 35C 35CGPU 91C 117C *** Core 29C 52C ***Core 1 29C 46C ***Again, the fan never turned on! Even whe... Read more

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I just purchased a Dell Optiplex 980 Minitower from an authorized refurbisher. It has a 255 watt "80 Plus" "90% Efficiency" power supply Model: L255EM-01. It is one of the "eco" power supplies. Everything on this machine works perfectly except that the power supply fan never spins up. Even under a load, the power supply is not getting hot with the ambient air movement keeping it cool to the touch. Is this normal behavior for this power supply?

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My current Optiplex 9010 mini-tower machine has a standard Dell 275w power supply (part no: 61J2N).  I want to upgrade this to around 500w so that I can use a ATI HD7750 Graphics card so that I can run Train Simulator 2013.  Dell use their own custom power supplies so I can just buy a normal 500w unit. Has anyone found a supplier who can supply an uprated power supply for the 9010 or know if a different Dell unit will work with the 9010.  Thanks

A:Upgraded Power Supply for Optiplex 9010

Considering your question was never actually answered, and that I am doing the exact same thing, the power supply on the Dell Optiplex 9010 Mini Tower is a very standard ATX power supply; that is, the dimensions of it are 5.9 × 3.4 × 5.5 in.
The case will also fit a full height video card of a maximum of something like 5.5 × 10 in. if it happens to be well designed. however, at that size the long end will be touching the drive bay.

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I've read a few articles on upgrading the optiplex 960 DT power supply but none are quite clear as to which one to buy. Has anyone upgraded their unit successfully? I'm tempted to modify the chassis to accept a larger one i already have. Any advice is greatly appreciated. Thank you. Also, i did try to call support but i talked to three different people who knew nothing about anything. But that's a whole other thread. I suspect i'll find a vast amount of knowledge on here instead. thanks again.

A:Optiplex 960 DT Power Supply Upgrade Question

Just about nothing but the original is going to fit that case -- if you really need the upgrade you may do better by looking for a used minitower 9x0 OptiPlex and starting with that.
You can probably go a couple of generations newer than a 960 and come in at or around $100 for a complete used system.

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I need to know the Supported Motherboard for the dell OptiPlex 755. like atx or mini atx Motherboard. and if I would be able to replace my old broken Motherboard with a new atx Motherboard.

A:dell optiplex 755 motherboard replacement

You'll need another OptiPlex board -- you may be able to use a slightly newer one but nothing standard is going to fit that case.  If you want to use a standard board, plan on replacing the case, power supply and heatsink assembly.

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I'm going to install a new motherboard in a damaged Dell Optiplex 740 and I was wondering if I install the mobo in the same way the damaged one was and not changed anything else, will I still have to reinstall Windows or will it boot and run as it did with the old mobo?

A:Dell Optiplex 740 Mobo replacement

If you use an exact replacement Dell motherboard it will work OK. If you use a different motherboard then you have a "different" PC and the Dell OEM OS is no longer legally valid. It is only valid for the PC it was delivered with, or an exact replacement (but you will probably have to activate it with Microsoft).

Another issue, Dells, generally, do not support (fit) non-Dell motherboards (or motherboards for other Dell models). The motherboard mounting holes can be different and the back panel I/O panel on many cases is solid and not an insert like a standard ATX case.

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So this is a last ditch attempt at repairing a faulty machine, as I like to exhaust all possibilities before giving up.
The machine in the title will not power up. It has a healthy power supply, which I have tested with the button on the back and also by bridging the green PS switch on pin to a ground pin. The fan on it spins and all 12 volt outputs are functional. However, there is no life beyond that, no light on the power button or any lights on the motherboard. I should add that when connected to the mains, the LED by the button on the PSU is NOT lit, until you push the little test button, but goes off again when you let go.
It has been tested multiple ways, right down to the simple test with nothing connected other than the PSU connectors. There is power flowing through the motherboard, as the fans spin up to maximum and the SATA output cable is live and powered up the DVD drive without an issue. I'm just wondering if this board has simply had it, as I cannot see any other possibilities. I've also cleared the CMOS and replaced the battery to no avail.
Sometimes in the past I've known of circuit boards suffering with 'dry joint', where the solder joints break away from the PCB. Putting said board in an oven for a short period of time (at low temperature) rectified this. Just wondering if this is worth trying or shall I just cut my losses and ditch the board.

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We replace the existing power supply (model no. L305P-01) with a new power supply (model no. N305P-06) and the computer will come on put we are not getting a signal to the monitor.  Are the two power supplies similar?  Really not sure where to go next and any help/direction would be appreciated.

A:Replaced an Optiplex 755 Power Supply and now have no video feed

These units should both work on a 755 Mini Tower.   The DL2032 battery may need replacement.
Take out all ram and it should beep low and slow.
beeep  beeeep  beeeep beeep
Then add 1 ram stick.
Sort thru each chip one at a time which should be matching pairs of ram.

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Hi I've read in a couple of posts that some people are having difficulty upgrading the power supply in an optiplex 9020 because of a proprietary 8 pin mother board power connector?
I've recently purchased a used optiplex 9020 and would like to upgrade its power supply and add a video card.
I've purchased  from moddiy.com a 24 pin to 8 pin power adapter to fit a standard atx power supply to the 8 pin mother board connector.
So what I have been experiencing since I installed the 24 pin to 8 pin power adapter to the motherboard and power supply is that it will do a self power test and then turn off. Then I try pressing the power button after the self power boot test I get nothing. My power supply ends up being dead and not working as I try to install it back to my older computer, I also tried  the paper clip test tothe 24 pin atx power supply and nothing my power supply is dead.
So I tried another power supply, and it did the same thing, and now I have two non powering power supplies that are both dead.
The power supply that I am using is a enermax 525w power supply.
I have been reading some one elses post that I need to use a EPS12v power supply, specifically the corsair CS750M that uses a +5vsb rail.
Can someone please tell me if this power supply or the lower wattage power supply with a esp12v power will  be enough power to power the motherboard, 2 1tb hard drives, optical drive, and a evga gforce 760 FTW graphics card??
I want to know if this will ... Read more

A:Optiplex 9020 videocard and power supply upgrade!

The 8 pin adapter is NOT the only connector that must be attached.  There is also the 4 PIN EPS12v connector.  Attaching this is not optional.  Some power supplies have an 8 pin connector for EPS12v motherboard connector that must be split into 4 + 4   This 8 pin IS NOT for the 8 pin connector on the motherboard.  The 24 pin goes to the moddiy then the 8 pin.  Every body and joes crab shack power supplies are not going to be tested and validated here.

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Hello, I bought a new Dell power supply a few weeks ago after I got the blinking amber light of doom   I had managed to replace the power supply a few years ago, however in my haste to remove the old supply I forgot to take pictures of where all the cables go and now I am completely lost. I have tried plugging it up but I keep getting a message of "drive one not found Serial ATA and SATA1.  It's got a lot of cords that I don't remember on the old power supply labeled from P1 through P9. If anyone could give me a simple explanation of how to plug these cords up I would really appreciate it because I don't want to have to buy a new computer. Thank you very much

A:How do I install a power supply on an OptiPlex 755 mini tower?

Hello!  If you click here you will get the manual.  I believe its page 127 that talks about the PSU and the cables and where everything goes.  

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I have a ThinkCentre M81 which has been regularly shutting down without warning and then re-booting.A technician saw that the power supply does not appear to be the correct type and suggested that I replace it.The M81 manual indicates that the model is equipped with a 280w power supply.  The Lenovo website lists a 240w power supply as the replacement model for the M81.Will using the 240w power supply cause the same problems?Why doesn't Lenovo offer the 280w power supply that it indicates comes with the machine originally.Thanks.

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I am looking to replace my XPS 410 Power Supply do I need to use a Dell PS or can i purchase a third party PS. I want a 600W PS. I am running Quad 6600 cpu, 2 DVD, 3 Sata Hard Drives and Nvidia 8800 Video Card.  Any recomendatios?

A:XPS 410 Power supply replacement

You can run any retail ATX power supply in the 410. I would recommend getting a modular PSU so that you only connect the wires that you need and put the others away until they are needed. This will help with not getting a clutter of wires that block the air flow.
I went with a 650W modular, I have the Q6600, 2 DVD, 4 HDD and an nVidia 8800GTS in mine.

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Hi, Could someone provide me a link to buy a replacement power supply for my laptop please? OMEN by HP Laptop PC - 15-ax004naW9T95EA#ABU Thanks kindly

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Recently the fan on my 600 W Cooler Master Power supply started to make increasingly loud noises. Upon investigation I found that the fan was locking up and then fighting to spin. I tried dusting down the system but had no luck in getting the fan to function properly. So yesterday I went out and purchased a new 650 W Antec Power Supply to replace it. I powered down my system, shut off the power supply, and removed the power cable. With an ESD strap tethered I documented the connections, removed the cables, and replaced the Cooler Master with the new Antec PSU. I then powered the box back up heard it post, figured it was fine and put my monitor back on it.

This is where my problems begins.

My system configuration is as follows:

motherboard: nforce 6801 sli
vid card: 8800 GTS
HD: two 76GB raptors in a RAID 0 for my OS
HD: two 500GB 7500k drives in a RAID 0 for storage
PSU: 650 W Antec
OS: Windows XP

When I power the box up all fans are active, the hard drives spin up, the mother board posts normally, and displays the "FF" status on the motherboards LED indicator signaling a normal boot process. The BIOS runs and I see it detect my two RAID stripes and it indicates that they are healthy. It gets to the boot from CD check and goes to a blank screen. It does not progress any further.

I am not of the opinion that the old PSU somehow damaged some system components as the actual power output was fine and my system functio... Read more

A:Power Supply Replacement Help

The only thing I can think of is you maybe unseated something a bit when reconnecting stuff. With the power off of course go through and reseat all the power connections, data cables, and add-on cards.

Any reason you didn't just replace the fan in the PSU rather than the entire PSU? Maybe put the old one back in temporarly just to see if it works still.

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My power supply has weakened and I need to replace it. when I turn my PC on an orange light now comes on the blue light doesn't come on. The fan powers up and down repeatedly. Basically where can I buy a power supply unit for the HP pavilion? I'm Having difficulty finding one.

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Does anyone know where to get a AOpen SWITCHING POWER SUPPLY model no: FSP145-50NI or if there is a replacement for this model?

A:replacement power supply

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I currently have a dell dimension 4600i with a 250watt power supply. i want to upgrade to at least a 400watt but im wary of picking one that wont fit in my pc. does anyone know of any power supplies that are better for dell pc's? they way dell built the computer does not allow for any hardware bigger than the original to fit. thanks for any help

A:Power Supply replacement

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Am looking to get a new power supply to replace my Hiper Type R 580w that seems to have ran out of life. Looking for around the same wattage (asus power calculator reckons I need around 450w), not looking to spend ridculous amounts of money.

Any suggestions??

A:Replacement power supply?

Here's an OCZ 550 Watt modular PSU with a combined 50 amps on the +12 volt rails for $65: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341022 ($44.99 after M.I.R.)

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Can anyone recommend a really quiet fan replacement for an ATX power supply?

A:Power Supply Fan Replacement?


Here is a good site for this kind of hardware comparison, though you will have to search for a place to buy the brands mentioned or others...

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My power supply bit the dust and I was wondering if it was safe to replace it with a higher wattage supply. The one I had was 300 watts and I was thinking of going with a 400 watt power supply. Is this okay or risky?

A:Power Supply Replacement

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Hi.I've a Dell Optiplex 755 MT(the big one)
There are my pc specs: Windows 7 Professional 64-bit SP1 CPU Intel Core 2 Duo E8400 @ 3.00GHz Tecnologia Wolfdale 45nm RAM 4GB 800 MHz PSU 305W Motherboard Dell Inc. 0GM819 (CPU) Graphics ASUS VW221 ([email protected]) Intel Q35 Express Chipset Family (Dell) Intel Q35 Express Chipset Family (Dell) Memorizzazione 149GB Seagate ST3160318AS (SATA) Drive Ottici HL-DT-ST CDRW/DVD GCCH30N Audio Dispositivo High Definition Audio Model computer: Mini tower
I want upgrade the video card with this:
a 1gb ddr5www.amazon.it/.../ref=cm_cr_arp_d_product_top
BUT I don't know ifthis card fit in my pc and if the PSU of only 305W does its job.
Can you tell me what video card will fit in my pc?
I prefer don't change PSU of 305W.
list some video card models ,please.
The resolution is 1680 x 1050.
thanks in advance.

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I have a dell OptiPlex 7040 micro with a defective fan. Does anyone knows the replacement part number that I would need to buy and also any recommendations on where to buy it?

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Will any ATX Power Supply fit in the 990 MiniTower?
The system comes with 265 watts but I'd like to install a more powerful supply so I can upgrade the video card to whatever I want.
On NewEgg, the sizes of the various power supplies seem to be slightly different dimensions than the Dell Optiplex 990 supply. 
Plus, Dell doesn't leave any margin for error in replacing with the exact same dimensions as the original equipment. They have all this aluminum and such preventing even a few millimeters difference in size with the replacement.
I prefer a Corsair Gold 80 Plus.

A:Power Supply Upgrade options for Optiplex 990 Mini Tower?

Only The TOWER Version can use a new power supply.
Dell™ OptiPlex™ 990 Desktop Service Manual

I picked up an ANTEC HIGH CURRENT GAMER HCG-620 SUPPLY 620W at Microcenter for $78
General SpecificationsForm Factor     ATXColor     BlackATX Compliance     ATX 12V v2.3; EPS 12V v2.91Wattage     620 WattsCooling Fans     135mm Double Ball Bearing FanSafety Standards     cUL, TUV, CE, CB, FCC, C-TICK, CCC, BSMI, Gost-RPFC     ActiveEfficiency Certification     80 PLUS Bronze CertifiedEfficiency     Up to 88%Input Voltage     AC 100V/240VInput Frequency Range     50Hz/60HzInput Current     9.0A @ 115VAC / 4.5A @ 230VACLoad Range     [email protected]; [email protected]; [email protected]; [email protected]; [email protected]+12V Rails     1Combined +12V Rating     576 WattsProtection     Over current protection (OCP), Over voltage protection (OVP), Short circuit protection (SCP), Over power protection (OPP)Physical SpecificationsDimensions (WxDxH)     5.9" x 6.3" x 3.4" (150mm x 160mm x 86mm)

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