Dell Dimension E510 Boot problem

[rjstuff]

When I shut down my computer and the next morning when I press the power button it shows a green light which flickers for a while but the pc doesn’t turn on - no sound, no nothing. (This light is just on the power button itself. ) The light just keeps blinking. The blinking stops after a few minutes and if I press the power button again, it turns on fine (sometimes it takes two or three tries). But when I shut down the pc again and try to turn it on, the same thing happens.
Its a DELL dimension e510, Pentium D CPU 3.00GHz 2.99HGz, 1.00 GB of ram, 70gig HDD, Windows xp 5.1.
Its barely two years old, someone had a similar problem posted here in 2007 but it wasn't resolved. I am wondering if it is the power supply or the motherboard? And what should I try to do - I am used to shutting down the pc every night but for now I am leaving it on (last two nights). Thanks for any and all suggestions.

[Plubius]

I've been having a very similar problem, also on a Dell Dimension E510 PC, less than 3 years old machine. Mine sometimes will refuse to boot past the Dell logo, sometimes won't go even that far (will just show a BIOS message). And there are periods where it only successfuly starts after 100 attempts. I don't know, seems like it could be even a problem with the start button... I changed the power supply, thus I know that is NOT the problem... I also just update the BIOS to version 07, but who know, may also have nothing to do with the issue. A computer that comes to a catastrophic failure in less than 3 years is pretty pathetic. The more irritating this issue is, the more I promise myself that I will never buy a Dell again... Seems it's like you are forced to buy their expensive long-term support issurance, otherwise a design 'time-bomb' kills your machine after the standard warranty expires.

[rjstuff]

OK. After trying to figure it out and reading other posts, I did come across this suggestion on another forum - replace the BIOS battery. http://www.pctechbytes.net/forums/showthread.php?t=15018
So, I did, but it didn't fix my problem. I then decided to find a suitable powersupply and replace it - I bought an Antec 500 watt powersupply as I read about it on another forum (several people really liked it). It finally arrived yesterday and today I switched the powersupply and have turned on and off my pc about 8 or 9 times, and everything seems to be alright.
So, I think, this can be a solution for some people, at least; as was the replacement of the bIOS battery for some. Good Luck