mac_shinobi Posted November 16, 2011 Posted November 16, 2011 Not sure if its going to be the same but we have had Lenovos in the past that the video ram gets corrupted either due to : * Dodgy RAM * Being powered off wrong ie dirty shutdown or the likes I have had to either 1. have it connected only by mains power lead and hold down the power button for 10 to 15 seconds which should make it power on, power off and power back on and then will re synch the screen etc which takes a minute or two for it to power back on and see the screen. 2. disconnect the cmos battery if you can get to the cmos battery easily enough for a good few minutes and then re connect cmos battery and re connect to mains and power back on 3. Replace the RAM as may be faulty RAM. I would try and keep the battery out of the equation until you try the above assuming it powers on without the battery connected ??
Admiral208 Posted November 18, 2011 Author Posted November 18, 2011 put the mainboard in the oven for 8-10 minutes on 180. Seen it on youtube:D SOLVED - This appears to have fixed it. I put the motherboard in the oven last night at 180 for about 10 minutes and then tested it. I powered on. So I rebuilt the laptop fully and then tried to switch it on and it was dead again. So I put it back in the oven, this time I did 10 minutes at 200. Now its working perfectly. Thanks for everyones help with this. J 1
evil-tom Posted November 18, 2011 Posted November 18, 2011 I have to ask.... Fan oven or Conventional? 190 degrees for a fan oven perhaps? T
Admiral208 Posted November 18, 2011 Author Posted November 18, 2011 it was 200 degrees in a fan oven.
jinnantonnixx Posted November 18, 2011 Posted November 18, 2011 It'll be interesting to see if this is permanent. You've re-flowed a dry joint by baking the board, but overheating components are the main reason why these go wrong. Keep us updated either way!
laptopsandspares Posted November 21, 2011 Posted November 21, 2011 it was 200 degrees in a fan oven. amazing. I love this forum glad you got a result, I'm going to add an oven to our workshop wish list!! (We've got a George Foreman but I don't think it'll work the same way)
laptopsandspares Posted November 21, 2011 Posted November 21, 2011 oh, just re-read my post, FYI we don't use the Geroge Foreman for repairs. Honest!
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