02-28-2017 09:11 PM
As the title suggests, my Lenovo h50-55 may have a possible PSU/Motherboard issue. Because upon turning it on the screen is basically black but the tower will still come on and all the fans will spin still. I have tried taking the ram out and swapping it around, taking the graphics card out and using the monitor ports on the motherboard (VGA) and nothing works. It also doesn't beep or anything upon turning it on and the HDD light is very dim. I orignally thought it was a HDD problem but i managed to install windows 7 on it and it worked perfectly. The monitor works fine too, as i plugged a games console into it and it's fine. Yesterday a family member took it to a PC repair shop and i wrote everything down that i had attempted on it the tower, but he claimed the power supply was "16" and it couldn't be tested to see if it was broken. As modern machines have "20-24" regarding PSU, but i have zero clue what he is talking about and i'll have to call him today and ask lol. I really like the machine too and i don't want to replace it after only having it for two years, so any help would be great. Thank you.
02-28-2017 10:09 PM
I cannot be sure without seeing it, but when you turn the machine, the first thing that happens is that the power is tested. If everything is good, a +5v signal comes back on the power-good lead. At that time everything starts up. Usually, if the fan and drives spin up, the power supply is ok.
02-28-2017 10:40 PM - edited 02-28-2017 11:02 PM
So it could be the motherboard that's broken then? Because i haven't changed a single component inside the machine since i have owned it, mainly because i haven't needed to lol. My very first computer had a broken motherboard/power supply and it didn't come on at all, but when it happened on my Lenovo machine i thought it could be the board and not the power supply. Unless the fans still spin etc with a broken power supply, if it can get enough power that is. unless that's wrong?
I've also been told it could be the chip because AMD chips can burn out, but i have also been told that can be a very rare occurrence in machines. It's main usage is for old PC games from 2008/2008 and they don't even put a dent in the peformance while they run on the highest settings. I'll also use it for music and watching videos, so nothing major is being done in order to make it burn out rapidly. One final thing, i have had to reset it A LOT via the tower, mainly because Windows 10 went mad and i had %100 disk usage, so could that have caused it? Or do you think everything just crashed at once? Because W10 definitely did crash lol.
03-01-2017 10:37 AM
Could be motherboard. Could even be memory. If you have 2 DIMMs, try them one at a time. That is free to try.
03-01-2017 08:53 PM
I have tried putting different RAM back in the two varying slots and i get nothing from doing that either. The machine doesn't beep or do anything, the fans just spin and the HDD light is dim and the power supply light comes on. I've been told the parts in the h50-55 are exclusively only to that machine and they'll cost a lot to order and replace.
03-03-2017 02:32 PM
Maybe I can recommend you to call the Lenovo Support or local Lenovo partner to check your machine.
Lenovo machines have the "Hardware Maintenance Manual" and the "FRU" list when you can find out each part and ask to the local deal the price of the part.
...chapter 9 list all the FRUs (Part numbers)
Check with the Lenovo support if it will be expensive or not to fix it.
Visit https://support.lenovo.com/us/en/ and open a ticket and see if it works out.
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03-04-2017 10:15 PM
Thanks for the help. I'm going to take it back to the shop where i got it from originally, as they will supposedly tell me what the problem is for free. Also, i have been told twice now that Lenovo parts cost a fortune, but i'll have to see what the shop says and then i'll call Lenovo. Because i do not believe it should have broken so rapidly after not being worked very hard lol.