I have a problem with my PC. After a while my pc will restart on it's own.?

Question

I have already checked and changed my video card for possible cause of the problem. I have already scanned and cleaned my pc from viruses and spy wares. Is it a problem with my power supply or there is something more. I need help please on how to troubleshoot this one. Thanks in advance.

Answer 1

this is really a bad problem, sorry to hear 2 people have it

if you are not using your computer, and it turns off, then u want to check your screensaver power management settings, Rmouse click desktop->properties->screensaver -> power.

if your computer is hard restarting (just turning off without properly shutting down), then there could be many problems. Power supply is a good posibility. Try installing windows again. If the problem still persists, then u have a big problem.

Sorry to be the bearer of bad news

and moonrider, you have beautiful eyes. sorry i cant help anymore.

Answer 2

Monitoring software might seem like a good idea but it suffers from the reliability of the chip giving this info, it isn't the most reliable. Get a digital multimeter and check the 3 main rails of the PSU with it. Set it to 20VDC and put the black probe in a black wire contact on an unused molex. With the PC running touch the red probe to the orange wire on a metal point (usually at the top of a plug) and it should be between 3.16V and 3.46V. The red wire should read between 4.75V and 5.25V and the yellow wire should read between 11.4V and 12.60V.

If the voltages are within the ranges I listed check the fan on the PSU. Is it spinning? Is there air coming from the rear of the PSU? If either answer is no, the PSU could be over heating. If both are yes and the voltages are good and steady check the CPU fan. Is the CPU heatsink plugged up with dust? Is the fan turning? Both of these are important as either or a combination of both can cause random rebooting from over heating.

If you have a Core 2 CPU or an Athlon 64, you can download Core Temp (find it with a search engine) and get a true reading from the digital temp diode on your CPU. With an older CPU (P4 or old school Athlon or Athlon XP) download SpeedFan and run it, the temps won't be as exact but it can give you a ballpark figure of where you stand.

Good luck.

Answer 3

Try installing a monitoring software so you could check voltages and temperatures from time to time. If you have a powerful video card but not so powerful power supply unit (PSU), its +12V rail could be severely stressed and become unstable. Sometimes, it's just plain incompatibility with the motherboard. I had one 480W PSU that was causing random restarts on an Epox mobo but was stable as a rock on an Asrock mobo. That Epox mobo was very stable w/ my Coolermaster PSU.

RAM instability could also cause the problem. If you have 2 sticks, try running your PC w/ 1 stick at a time to pinpoint w/c one is causing the problem.

Answer 4

ray_8128 provides you the final utility-correct answer, yet there ought to probably be hardware subject concerns besides. a million. once you're tech-savvy, verify each and every of the ability connections from the ability furnish to the motherboard & drives interior the unit. that is attainable for vibrations to shake a number of them unfastened. 2. verify the ability furnish itself. seem for any singes or discoloration. If the ability furnish would not feed a delicate modern, that ought to reason the concern you're experiencing. 3. verify the motherboard. in many cases cases, if a gadget overheats, it will do the comparable ingredient. verify to make beneficial that the processor fan (and all the followers interior the gadget, for that remember) are sparkling and movable. additionally, verify for discoloration around the motherboard's power connection, besides as around the processor; that ought to show a undertaking. and finally 4. verify the ability cord from the wall to the gadget. make beneficial that the relationship on the laptop isn't flimsy. additionally, if attainable, try plugging it into yet another oulet or socket. in specific cases that could be a power undertaking it fairly is out of your administration (e.g. heavy drain units on the comparable circuit because of the fact the laptop). back, those are merely speculations, yet issues to undergo in recommendations. devoid of fairly having the flexibility to artwork on the gadget, that is all guesswork. good success, and feel free to drop me a line in case you nevertheless have issues.

Answer 5

i had the same problem. seems as though ur computers fan has broken so the computer gets too hot and restarts.

Answer 6

me too, i start it up, then it will start one more time, weird..