Question PC won't post, getting beep codes

Sithex

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May 7, 2014
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Hello! My friend asked me to look at his PC for him and I don't understand what's happening. Basically, it beeps twice quickly and when looking at the manual (link to manual pg. 76) it says it's a CMOS setting error? I reset the CMOS battery by taking it out for a few minutes. I've also tried a new battery but the same issue. Does this mean it's a faulty mobo?
Initially, it didn't beep at all until I cleaned the CPU. How can it be a CMOS setting error when I reset it?


So far I've done the following
  1. reseated ram
  2. tried only 1 ram stick (Switched between all 4)
  3. tested HDD (works)
  4. reset CMOS
  5. replaced CMOS battery
  6. Cleaned and reapplied CPU paste
PC:
Lenovo Machine Type 9181
Lenovo Rev v1.0 motherboard
 
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