Gateway 831gm not booting. Fans come on but no boot process.
When you say new motherboard do you mean an actual new motherboard or new to that machine, but came from another used model?
When you say you tested the power supply do you mean with a voltmeter/ammeter or put it in another computer and it worked?
I worked on several gateways with similar problems and it boiled down to motherboard issues.
I tested it by replacing the power supply with a bigger (used) power supply and it worked great (for 1 time) and then put the other power supply back in to confirm my diagnosis and yep it wouldn't boot. The next morning I was going to run some virus/malware cleanup and installed the other (known good) power supply and it would not work. I tried all day to get it to boot and it did about twice in a 4 hour period. When it did run it would run great but any attempt to restart it would cause it to crash. No ryhme or reason, it would not fail the same way more than twice. Sometimes beeps, other times no beeps, sometimes it would start up with no video (could hear the Windows starting sounds) other times it would start up normal. I could let it sit and it would start or I could keep trying in sucession and it would eventually start. Some times the fans would slow down from a roar, sometimes they wouldn't. So with a known good power supply that had 150 more watts than the original I diagnosed it as a failed motherboard. But if you have put in a brand new motherboard then I would replace the power supply, because a bad power supply does not mean no power, just not enough power. Please post back and let us know what you find out.
Mar 31, 2009 |
Gateway 831GM PC Desktop