Odd to see your case having a keyhole. That's something that was more an AT or XT thing. Do you have the key for it? 😜
Your case is typical for the earliest ATX cases, though I was never much of a fan of those tiny floppy holes in the front.

I read something about a card of yours not working properly somewhere, but I don't recall seeing a thread of yours. Cleaning parts is something that is best to simply do mandatorily as this can prevent all kinds of problems.

Yeah i thought it was odd seeing the keyhole too. Thankfully i got the case with the key too. Its pretty much unused though. And yes, i guess i have learned more about being sure i clean things more. Never thought of the pencil eraser trick though.

Is that Pentium 2 actually a 450? Why did you de-clock it?

why underclock it's for some odd game compatibility issues ?

In other threads by the OP, the system was having issues at 100MHz FSB. I don't believe that a cause was fully determined.

Yeah the system will not boot with 100 FSB sadly. It actually is a P2450 unless i was scammed and somebody put a SECCII P2 450 case thing on it. I have a P3 450 waiting for me to go pick it up this should be a good way to test if its the motherboard or not. Another thing i thought about doing was setting to 100 FSB and putting the multiplier down so it goes to 400 Mhz.

The whole P(x)B series by ASUS is actually among the most well documented board series out there, so go out and grab some docs on it.

Also, is that a Kyle Katarn avatar? Because if so, you have some great tastes on Star Wars characters.

Yeah all i have is the official Manual for the motherboard.

And yes its Kyle. Best star wars character ever.