PLEASE HELP! Dell inspiron 15r 5537 Bios chip problem

[Geekoftheweek]

Hello everyone. First post here. I have this DELL laptop model mentioned in title. One day it just didn't turn on. Took it to maintenance; they replaced bios chip. Later, the laptop took almost 20 seconds just to show the DELL logo, while it had only lasted 2 seconds before it bricked.
I tried updating the bios to the latest version, still having same problems.

My main problem is not in the delay at boot, it actually freezes at the welcome screen no matter what windows version i use 7, 8 or 10. Tried booting from flash drive, same problem. It's not a disk drive problem nor ram. I ran all the necessary checks. Nothing's wrong. Is there such thing as incompatible bios chip? Some people told me the new bios chip is causing this problem.

Laptop sepcs:

210-AAPR : Inspiron 15R (5537) BTX Base
605-BBBI : Ubuntu Linux 12.04 SP1
328-BBDZ : Packaging : Brown Box
583-BBEF : Keyboard : Internal Arabic Qwe rty Keyboard
555-BBHH : Intel® 7260BGN + BT4.0 [802. 11bgn + Bluetooth 4.0, 2.4 GHz , 2x2]
389-BBZJ : Palmrest Sticker : English
451-BBBG : 65 WHr, 6-Cell Battery
450-AAGK : Power Cord (UK Irish)
429-AAFK : 8X DVD+/-RW Drive Tray Load
400-AAOK : 1TB 5400RPM SATA Hard Drive
370-AAFC : 8GB Dual Channel DDR3L 1600MHz (4GBx2)
340-ACPO : Additional Labels for Ubuntu
340-ACIF : Ship Docs : Eng/French/Dutch/I TA/GER/ARA/TUR
340-ACDS : Placemat (Eng/Arabian/Frence/T urkish/Slovenian)
320-BBCK : LCD Back Cover - Fire Red
391-BBEB : 15.6 inch LED Backlit Display with Truelife and HD resolutio n (1366 x 768)
338-BDPN : 4th Generation Intel Core i5-4 200U Processor (3M Cache, up t o 2.6 GHz, 8670 2GB), FY15/C1