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Question

***PLEASE HELP*** Computer not working and I'm out of ideas

Jan 5, 2014 4:19AM PST

So here's the situation. I got a new mobo, cpu, and gpu. When I swapped it all over, nothing seemed to work. In the process of ruling out what part was dead, I used my old motherboard and cpu to test the gpu. The gpu, old motherboard, and old cpu worked 100%. It turns out my new motherboard has damaged pins. So in the meantime, I was going to use my old motherboard, old cpu, and new gpu. When I put that all back in my case, it would not power up like before. Everything turns on for about half a second, then shuts off and will continues to try powering on in an infinite loop. I've already taken this apart 3 times, built it out of the case, tried another power supply, and tried all my tech friends, but we are all stumped. Any thoughts

Discussion is locked

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Clarification Request
Are you saying you put tried to put the old hard drive
Jan 6, 2014 12:57AM PST

on new hardware?...and, if so, was it Windows
XP or newer? If so, the infinite boot loop is a common symptom when one does this and it's a result of Windows licensing. It sees the hardware change as a possible act of software pirating. There are workarounds as long as it's a retail copy and not an OEM version.

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Answer
And did you try it without a case?
Jan 5, 2014 4:36AM PST

Too often it's the extra mounting post in the case. Start small with just PSU, motherboard and the bare minimum on cardboard.
Bob

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Answer
reset the CMOS with the jumper on the old motherboard
Jan 5, 2014 1:20PM PST

Did you take the old CPU off the old motherboard and put it back on? Maybe more bent pins now? I hate installing the new processors, their pins are more like "hair" than pins. Very easy to bend.