Aspire 7520g boot problem

[oshimazaki]

hi m8'ts i was trying to fix problem o aspire 7520g , well i failed. the problem is that when i switch on the laptop i see only one blik of green light at hdd icon and thats it . the laptop fan runs for a not more than 20 sec. on screen no response at all not acer logo , what i did i checked the video card which is ok the same is with memory and cpu all these modules work properly -- benn tested on other same model laptop... some guys told me that the problem might be on hardware side of Motherboard .. but still i don't belive in that so here is my question to you guys : is it possible that this problem might be on screen it self side or bios chip ?????

 

[Tmagic650]

Replace the motherboard...

 

[doktorj]

I have the same problem, did you find any solution ?
I tried to remove RAM, HDD, resetting in any way i could find (CTRL + FN / pressing start for 30'' with battery and electricity off, removing BIOS battery and putting it back) but none worked.

 

[Tmagic650]

The solution is to have the motherboard replaced... I have done this many times with great success