Two dead laptops

Justapersononthenet · January 29, 2019

If you saw this post already I just moved it to the right section (From laptops)

So I have a "dead" acer aspire 7750g (7750G-2434G75MnkK , i5, radeon hd 6650m) had a corrupted boot sector, and maneged to somehow repair it without losing data and spending money (same hdd 30gb less space) but that wasn't the end, hardweare acceleration didn't work even after deleting and reinstalling drivers with DDU and after a few months green lines showed all over the screen, after reboot no image, but worked with external display ( with the same lines showing up and graphic corruptions on boot). Probably it's because of the HDD, not sure tough, even without it no bios, nothing...

Saw a few videos that showed how by cutting off power to the dedicated graphics I could get it back and running on the igpu, but after removing the choke over the gpu die even the monitor didn't show anything, removing cmos battery didn't help.

Quote

picture form EmpowerLaptop,the photo might be of a similar model but the choke I removed is the one on the top left side of the red square

The second laptop is really old, a presario c735el, but i'd like to repair it for some retro gaming and for emotional reasons, a few days ago I just plugged it into mains and the power light blinked (normally it doesen't), it also refused to boot and when plugging the obviously dead battery into it every light (power button, WLAN button, notepad lock ,caps lock ecc.) blinked togheter, there was also a pop sound at every blink.

the psu voltage is normal and I haven't dropped the laptop in ages

both batteries are dead dead, Cmos battery voltage is ok

Thanks to anyone in advance

rcmaehl · January 29, 2019

Generally modifying the dGPU on these Acers requires a BIOS mod. I know I had to mod my BIOS to enable dGPU once I added it to my Aspire 4720z

Justapersononthenet · January 31, 2019

On 1/29/2019 at 6:23 PM, rcmaehl said:

Generally modifying the dGPU on these Acers requires a BIOS mod. I know I had to mod my BIOS to enable dGPU once I added it to my Aspire 4720z

https://www.techsupportforum.com/forums/f15/bios-advanced-settings-unlock-1047298.html

I've got nothing to lose but no time, might try this weekend...I have to dissasemble,get the coil back and reassemble the thing, also thanks to my next level soldering skills I've also broke a leg, maybe a well positioned piece of metal would do the trick temporarely....