In the last few days my desktop has become increasingly hard to boot up. The first signs that something was amiss was when it hung whilst in my Debian partition. I'd just installed drivers for my Nvidia 8600GT so I suspected I'd messed up somewhere. I booted back in to Pclinuxos kde 2010 (Fully upgraded) and everything seemed fine.... Until it too hung on me.
From then on, it started to play up in the boot process. Sometimes getting to GRUB and halting there, other times I could hear it booting but nothing came up on the monitor (Light didnt turn green) and I had to ALT-SysRQ- REISUB. Sometimes that worked and it booted up properly but then even that stopped working.
Normally, when I hit the power on button it turns blue and immediately starts up but now it seemed to take ages to even get to the blue light, like it was struggling to find enough power.
So, I pulled the graphics card and Hey Presto! it booted fine with the onboard Intel graphics... But I still don't know whether the Nvidia card is malfunctioning or the power supply is about to fail? If I continue with a failing psu I'm guessing it could effect other components?