Solve : Not sure what I did,?

1.	Solve : Not sure what I did,?
Answer» So yesterday I was given a pc that was unknown whether or not it worked. I brught it home and looked, it was missing a few parts. I used parts from my PC to check it, namely my video card and ram that I knew was good. The PC did nothing. No data to my monitor. I decided to try another way. I put my equipment back in my own pc, but switched the processors (same socket) to see if maybe that was what was wrong with this MYSTERY PC. It once again did nothing, so I assumed it was the processor. I switched my chip back into my PC, and now it STILL does nothing. I then unhooked all IDE and SATA connectors, just trying to get to bios. Nothing. Any ideas? Did I fry my chip or motherboard? Diagnostic advice?So you had 1 bad computer... mixed parts and put original parts back to each system and now have 2 dead computers?Good evening thegreyfox and welcome to CH I am with DaveLembke so you are saying you know have 2 dead PC's??? In over 13 years i have only replaced a bad CPU about 6 times. Very rarely does a CPU go bad. Chances being the CPU when it was put back in your current PC that it is not in correctly or pins may be bent, or the memory is not seated, or the video card is not seated or a POWER plug is not in or seated all the way. With the PC that you were given you never stated if you had any lights on the front of the case or anything or even if the fans turned on or if you got any beeps etc. With the info you put in the post it may be a PS (power supply) or motherboard. What model PC were you given? (i.e HP A6400f etc) Hope to hear from soon, Mike Quote from: hartbeatmr on September 07, 2012, 10:23:15 PM Very rarely does a CPU go bad. Unless you bend/snap a pin!! Quote from: reddevilggg on September 08, 2012, 04:33:08 AM Unless you bend/snap a pin!! or gets overheated... or overvolted... or is used in an atmosphere containing certain solvent vapours, or it gets old... Quote from: Salmon Trout on September 08, 2012, 06:56:02 AM ... or overvolted... hmm, did you USE anti-static equipment when exchanging hardware ??And each time carefully scrape off old thermal COMPOUND and reapply new on each cpu, and take care not to flex unduly or crack either motherboard when clipping heatsink down? And check in BIOS that voltages and clock are suitable for the cpu just installed? And check that the motherboard and bios version on each motherboard was suitable for the swapped cpu? Diagnostic advice: proceed as per new build, rebuild your old PC with its own previous parts, CPU (check no bent/broken pins, old heatsink compound removed, new heatsink compound properly applied, heatsink properly clipped down, fan connected and after power up, verify is rotating) 1 stick of RAM properly seated, no drives connected, check all connections and modules for good connection/seated properly, see if it boots, then if it does, add components. Use static precautions at all times. Stay calm, don't panic, always power down before inserting/removing parts. Go slowly and think about what you are doing. Possibility: bad PSU or motherboard on gifted PC cooked first its own old CPU and/or RAM and now your good CPU and/or RAM. Or bad CPU cooked both PSUs or... or... or... etc. Swapping components AROUND can be a good way of killing multiple PCs... Never use your main or only good PC as a swap source or host for suspect parts. Old PC given away with parts missing may have suffered terminal failure followed by salvage of anything worth having. Reminds me of when my daughter put a goldfish she won at funfair shooting gallery into the same tank as her tropical fish. All dead in 2 days. CPUs or other components (e.g. RAM) may very rarely fail in use in the equipment they were assembled in if it is run within spec and not abused, but they often fail after removal and reinstalling, especially if conditions are unfavorable as outlined in this thread.

Answer»

So yesterday I was given a pc that was unknown whether or not it worked. I brught it home and looked, it was missing a few parts. I used parts from my PC to check it, namely my video card and ram that I knew was good. The PC did nothing. No data to my monitor.

I decided to try another way. I put my equipment back in my own pc, but switched the processors (same socket) to see if maybe that was what was wrong with this MYSTERY PC. It once again did nothing, so I assumed it was the processor. I switched my chip back into my PC, and now it STILL does nothing. I then unhooked all IDE and SATA connectors, just trying to get to bios. Nothing.

Any ideas? Did I fry my chip or motherboard? Diagnostic advice?So you had 1 bad computer... mixed parts and put original parts back to each system and now have 2 dead computers?Good evening thegreyfox and welcome to CH

I am with DaveLembke so you are saying you know have 2 dead PC's???

In over 13 years i have only replaced a bad CPU about 6 times. Very rarely does a CPU go bad.

Chances being the CPU when it was put back in your current PC that it is not in correctly or pins may be bent, or the memory is not seated, or the video card is not seated or a POWER plug is not in or seated all the way.

With the PC that you were given you never stated if you had any lights on the front of the case or anything or even if the fans turned on or if you got any beeps etc. With the info you put in the post it may be a PS (power supply) or motherboard.

What model PC were you given? (i.e HP A6400f etc)

Hope to hear from soon, Mike
Quote from: hartbeatmr on September 07, 2012, 10:23:15 PM

Very rarely does a CPU go bad.

Unless you bend/snap a pin!! Quote from: reddevilggg on September 08, 2012, 04:33:08 AM

Unless you bend/snap a pin!!

or gets overheated... or overvolted... or is used in an atmosphere containing certain solvent vapours, or it gets old...

Quote from: Salmon Trout on September 08, 2012, 06:56:02 AM

... or overvolted...

hmm, did you USE anti-static equipment when exchanging hardware ??And each time carefully scrape off old thermal COMPOUND and reapply new on each cpu, and take care not to flex unduly or crack either motherboard when clipping heatsink down? And check in BIOS that voltages and clock are suitable for the cpu just installed? And check that the motherboard and bios version on each motherboard was suitable for the swapped cpu?

Diagnostic advice: proceed as per new build, rebuild your old PC with its own previous parts, CPU (check no bent/broken pins, old heatsink compound removed, new heatsink compound properly applied, heatsink properly clipped down, fan connected and after power up, verify is rotating) 1 stick of RAM properly seated, no drives connected, check all connections and modules for good connection/seated properly, see if it boots, then if it does, add components. Use static precautions at all times. Stay calm, don't panic, always power down before inserting/removing parts. Go slowly and think about what you are doing.

Possibility: bad PSU or motherboard on gifted PC cooked first its own old CPU and/or RAM and now your good CPU and/or RAM. Or bad CPU cooked both PSUs or... or... or... etc. Swapping components AROUND can be a good way of killing multiple PCs... Never use your main or only good PC as a swap source or host for suspect parts. Old PC given away with parts missing may have suffered terminal failure followed by salvage of anything worth having. Reminds me of when my daughter put a goldfish she won at funfair shooting gallery into the same tank as her tropical fish. All dead in 2 days.

CPUs or other components (e.g. RAM) may very rarely fail in use in the equipment they were assembled in if it is run within spec and not abused, but they often fail after removal and reinstalling, especially if conditions are unfavorable as outlined in this thread.

Solve : Not sure what I did,?

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