Possible motherboard failure?

[oz73942]

I have an hp a1610n which started experiencing some problems sometime around May last year. My computer would power on, fans would start at full blast but i would just get a blank screen and my monitor would go to sleep saying theres no connection. I would have to turn the computer on and off multiple times before i finally got it to work perfectly, but upon restarting it or shutting it off i would have the same problem. Both hp and geeksquad diagonesd a motherboard failure. i sent it to get fixed, got the mobo replaced, but know im having the excact same problem as before. so i no longer think it is a faulty mobo since the problem started once again only a month after the replacement. Any suggestions to what it could be? really appreciate the help!

 

[HTRN]

If its doing the exact same thing and you've replaced the MoBo , I would suspect the power supply. If you have a DMM ( volt meter ) try checking the rail voltages while booting up and see if thier going out of range , if so swap in a new PSU and see if that cures the problem.

Just some things to check - reseat all memory sticks and add-on cards , clean out the PC and all heatsinks and fans. Check all cable connections . Run some stress tests on memory , hard drive , cpu , video card . If your comfortable with your ability, remove the cpu heatsink and clean / reapply thermalpaste .

 

[oz73942]

If its doing the exact same thing and you've replaced the MoBo , I would suspect the power supply. If you have a DMM ( volt meter ) try checking the rail voltages while booting up and see if thier going out of range , if so swap in a new PSU and see if that cures the problem.

Just some things to check - reseat all memory sticks and add-on cards , clean out the PC and all heatsinks and fans. Check all cable connections . Run some stress tests on memory , hard drive , cpu , video card . If your comfortable with your ability, remove the cpu heatsink and clean / reapply thermalpaste .

i do have a meter, but not sure on how to check the PSU, i have reseated all the memory sticks and add-on cards, cleaned everything out, checked all the cables, and stress tested all my components even ran a check on the mobo. Only 2 things left are the cpu heatsink cleaning, and power supply. ok i just swapped out the psu with one from another computer that i know works 100%. No good.

 

[wlaziu]

My PC behaved similarly after a lightning struck the power grid near my house (despite the PC turned off). The problem was one of the capacitors in the PSU that had lower capacitance then expected.