I have failed ram slots on motherboard and slow internet

I recently, reinstalled my CPU fan in an attempt to reduce the noise.

After this, when I started up the system the CPU fan was making a lot of noise (a blowing kind of noise like it was blowing too fast). I decided to try the stock fan which also made noise. I went back to the after market heatsink.

Some where along the line, I got some thermal paste on the Motherboard and and the edges of the CPU unbeknownst to me. When I discovered it I did my best to clean it.

When I started the system finally it was making a lot of noise and refused to start properly. It would keep restarting and there was a red light next to the RAM. After checking online I found that the problem could be RAM related. I tested the ram slots and found that the computer would not boot when the two ram slots next to the CPU were filled. I am currently running just with just 1 4gig ram stick.

I initially thought the motherboard was failing but I also have unusually slow internet which I have heard could be due to a failing PSU. I have had epileptic power outages where I live and the system has suddenly switched off as a result.

I also noticed that the first time I reinstalled my CPU fan/heatsink that the Asus logo I see first when I started up my system changed from a big blurry version to a small sharp one even though I didn't update the bios (which is when it usually happens). I don't know if that is significant.

My specs:

Mobo: Asus P8Z77-V LX
CPU: Core i5 3570K
GPU: Gigabyte Radeon 7950 3GB
Windows 7 64bit
CPU Fan: Enermax ETS-T40
Sound Card: Xonar Essense STX
Ram: Corsair Vengeance 8GB
PSU: Corsair TX750
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  1. Best answer
    the dimm issue is a seating issue with the cpu or a bent pin under the cpu. you may still have paste on the cpu or the pins.
  2. Thank you for your quick reply.

    So it might be resolved if I clean the CPU? If there is a bent pin will I need to replace the CPU?
  3. if there a bent pin on the mb if it not bent bad you can use the end of a click pin to bend it back.
  4. I will open my system and see what is up and get back to you.
  5. I have checked for bent pins but I didn't notice any but you seem to be right I noticed some extra paste. I will go and see if I can get it out with some methylated spirit. To be honest, I feel like getting rid of my MOBO anyway so I might still do that.

    Anyway thank you a great deal for your speedy replies.
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