Swapped HDD of Pavilion G6 2264sa with HDD of a Pavilion G6 1331sa / Brightness not wking..!!

Question

Hi there,
Hope everyone is well and wonder if anyone can help me. My problem is my daughter’s laptop, she is in the middle of studying at Uni and all her work is on her laptop which is a:
HP Pavilion G61331sa/1.6 GHZ AMD Quad-Core A8-3520M APU with Radeon 6620G + 7450M Dual Graphics/ 6GB Memory/ Video Graphics AMD Radeon HD 6620G + 7450M Dual GPU (1 GB DDR3 dedicated)/ HDD 750 GB SATA (5400 rpm)/ Running Windows 7.
My son unfortunately accidentally spilt juice onto the laptop. I quickly took all the preventive measures, switching off power/ removing battery/ Hard Drive and turning laptop upside down. I also left it in the airing cupboard for a couple days to dry out then tried it again. It powers up and the power light stays on and the fan works but the caps lock button light keeps flashing and the screen remains blank even when I try to use an external monitor via the HDMI connections again the external monitor is blank. It would seem that most of the spillage was on the left side of the keyboard as the keys are very sticky that side. I spoke to HP about my problem as the laptop is still under warranty however as we all know it does not cover accidents and No, we did not get accident cover. As my daughter is in the middle of exams a solution was needed pronto. It was suggested by HP techy guy to purchase the modern equivalent with the same HDD and just change over the HDD and update all the drivers.
I bought a HP Pavilion G6 2264sa/ Intel® Core™ i3-2370M/4GB Memory/750GB SATA Hard Disk Drive/ Graphics Intel HD Graphics 3000 (up to 1.65 GB) running windows 8 (64 bit).
I changed over the HDD as suggested and updated all the drivers. There was a slight problem booting up but just had to go into BIOS at start up (F1 key) Boot Configuration/ Settings and let it know to Boot from HDD as opposed to CD ROM etc. The HP Pavilion G6 2264sa booted up with the G6 1331sa HDD and works fine. My daughter does not have to worry about spending time finding her away around a new laptop and windows 8; everything is just where she knows it is.
The only problem I am having is the Brightness controls (f2 and f3) do not seem to work and the screen remains very bright to the degree of causing a headache. I have uninstalled and installed the Graphics Driver but still no control over Brightness...!!!!!!
Any Ideas where i may have gone wrong??
Your suggestions and ideas will be very much welcomed and appreciated.
Many thanks in advance...
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Answer 1

Click in select power plan.
Showed the screen the POwer Plan:
Down is a Sreen Brightness just put on the better way for you :
http://www.dailyartisan.com/wp-content/uploads/2010/10/windows-7-power-plan.png
If don't showed in that screen. Click in Change Plan Settings that you use and put on the better way for you:
http://www.techrena.net/images/Tip-How-To-Change-The-Low-Battery-Notifi_142D8/edit-plan-settings.png
The Other Laptop is CPU Fail.
Take Off the Ac Adapter and Battery.
Press the Power Button for 60 seconds.
Plug just the Ac Adapter.
Power on your computer.
If the flashes continue. click the key Start (windows logo) e the Key B, together.
If this don't work.
You have to send fix. Is a Fail in CPU Flash 1 time with pauses in the seconds.
Att Cristian
If this answer help you click in Kudos to tanks.
If you don't have more question click in Accept Solution to close this case.
I'm sorry for the bad english I'm from Brazil.
Tank You.
If this answer help you click in Kudos to tanks.
If you don't have more question click in Accept as Solution to close this case.
Best Regards Cristian Derick.
Senior Support Analyst.