Installed new PSU and windows won't boot.

Hewlett-packard / Rx881aa-aba m8000n
February 8, 2011 at 16:21:17
Specs: Windows Vista, 2.6 GHz / 3581 MB
Hey guys I have been having a problem with my computer randomly shutting down without any warning for several weeks now. At first I just dealt with it because it was only once every couple days or so, but now it seems to shut down 5-6 times a day. I don't know much about the inside if a computer, but I did some research and started out with a good cleaning. I got a couple cans of duster and I cleaned everything out real good. I took out the video card and all 4 sticks of RAM to clean it all out, and then "re-seated" the RAM. Problem still occurred so I decided to run a memory test. Ran the windows memory diagnostic and this came back all good as well. From what I can figure out I have either a bad power supply or a bad motherboard. I heard it is much more likely to be the power supply, and I have made several hardware upgrades and still have the 5 year old 300 watt power supply so I figured that's probably my problem.
I went out and picked up a 600GS corsair gaming PSU and hooked it up. It is much different than my old PSU, but I was pretty sure it was all hooked up correctly. Anyways, I hooked up all the cables powered it on and it goes to the windows loading screen and then shuts down. I tried switching cables every which way, tried using both molex like my old PSU had for the video card, and the new 6 pin PCI-E with the new PSU. Nothing seemed to work. I had some homework I needed to do so I threw the old PSU back in and it booted right up. After my homework I once again tried to hook up the corsair to no avail. I tried every possible combo I could and still nothing.
I woke up today and decided that maybe it wasn't compatible with my motherboard so I went and exchanged it for a different one. I brought home this one now which is a Thermaltake TR2 600W and hooked this up the same way, and once again gets to the windows screen and shuts down. I asked the Geeksquad guy at Best Buy and he told me to try a lower watt PSU, but from what I have read on here that should not matter. If anyone has any ideas please let me know. I am not a genius when it comes to computers, but I can get around them a little bit so I am willing to try.
Just to be safe I will explain how I hooked up the new PSU's as well cause maybe that is what is wrong with it. This was the first time I tried to install a PSU, but I have installed almost everything else so I figured I would give it a go. Both the corsair and TR2 had a 8 pin that broke down into a 4 pin, which is what I need so I plugged that in. I then plugged in the main 24 pin motherboard connector and the video card. I used both the 4 slot molex and the 6 slot PCI-E in the video card and nothing mattered. I hooked up a SATA into both my HDD and DVD-RW as well. I also tried with only the HDD hooked up and this didn't matter. My mother board also has two smaller red cables that hook up to both the HDD and DVD-RW right next to the SATA cables. I hooked these both up where they were originally, and also tried it without them, but if they are not plugged in I get a disk read error and the computer doesn't boot at all. Please any help would be greatly appreciated!

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#1
February 8, 2011 at 16:54:17
Did you consider that your CPU may be overheating & shutting down to protect itself?

http://h10010.www1.hp.com/wwpc/ca/e...


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#2
February 8, 2011 at 17:03:04
Ahh I forgot to post that part. Yes I did, but I have had overheating problems before and they were nothing like this. I did however pull of the side panel and put an external fan blowing on it, and also checked to make sure that all the other fans were running as well. I have three fans one on the video card which is a 800 GT, one on the processor, and then the on in the power supply. I have not ran anything to track the temperature, because I am fairly confident that is not the issue. I suppose this is something I could look into more though. Thanks for the quick response, anyone else?

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#3
February 8, 2011 at 17:03:55
Sorry video card is a 8800 GT, not an 800.

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Related Solutions

#4
February 8, 2011 at 18:37:30
if you can dowlaod this and create a bootable cd:
http://distrowatch.com/?newsid=06447

try booting from the cd, post bac the result.

larry


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#5
February 8, 2011 at 18:45:57
Hey Larry, thanks for responding. Exactly what is it that you are asking me to try? Just a bit confused, but I think you are asking if I can download that, burn it to a cd and then boot from the cd? If you could give more details that would be greatly appreciated. I'm not a whiz by any means and I fear you are above my head with that. I am on the computer that crashes right now and after the guy mentioned earlier about temps I downloaded speed fan and everything looks fine. I have now tried a third power supply from a friend and all three of them are not working. The first two were brand new and the third was about 6 months old. If you could just clear up some details I would be more than happy to give it a try. Thanks again!

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#6
February 9, 2011 at 17:05:56
Earlier today I had a guy tell me that it sounds like something is wrong with my windows registry and that is why it is not allowing a bigger power supply to boot up windows. He suggested I get a different copy of windows and he thinks that would fix it. Does this sound right to any of you guys on here? I honestly have no clue, but from what I have read I don't see why this would make a difference. He does however know a fair share about computers so maybe he is on to something. Anyways, any other input would be greatly appreciated before I spend at least another $100 on a copy of windows.

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