HP HDX 18T 1200 Memory upgrade.

Hello,

I have a HP HDX 18T 1200 series laptop. I bought it with 2x2GB RAM. The sticker on the RAM says that it is DDR3-1066(PC8500). I recently tried to upgrade the RAM to 2x4GB(DDR3-1066) and the laptop does not boot. I do not see anything on the screen. The LEDs on the keyboard are on. I tried with multiple vendors(Corsair and Crucial) and could not get it working. Does anyone know the issue? I am pretty much frustrated at this point. I called HP and they did not help me. They told me that if I buy support they will help me. I wanted to check in the internet before doing that. I wanted to upgrade the laptop to 8GB so that I can I upgrade it to Windows 8.

Thank you.
Murthy

 

Is that a circa 2008/2009 or earlier system? If the BIOS has been updated to the latest available and you've tried multiple Sodimm's from different manufacturer's (including trying a single 4GB stick in each slot to see the system boots or not...) then the system probably won't be able to use 8GB RAM

You can still do a clean install to Win8 though - 8GB RAM or more would have been ideal, of course.


Good luck.

 

Thanks for the reply. The user manual for this unit says that, it supports 8GB. I am not sure what is the issue here. I read on HP forums. Few people had the same issue, but no one said that how they fixed it. I bought this laptop in 2009 and at that time they gave an option to factory upgrade to 8GB. I did not do it because of the price. HP was charging ridiculous amount of money for 8GB RAM at that time.

Thank you.
Murthy

 

Murthy, I was wondering if you ever found a solution to this. I am in the same boat as you. I have an HP HDX 18t- 1200 CTO that I custom ordered in 2009 for my wife. Everything on this unit shows it should be upgradeable to 8GB of RAM. I have updated the BIOS to version F.34 which is the newest one on the HP website. I have 2 sticks of Corsair PC3 8500S (1066) RAM that are 4GB Sims. I still have my orignal Samsung RAM which are both 2GB 8500S (1066) Sims. I have installed CPUZ and checked all of the 4 sims. They are pretty much identical down to the timings and everything. The 4GB Corsair Sims both work if I put only one of them in the primary RAM slot the PC boots with 4GB of RAM. It wont boot in the secondary slot with either SIM but will boot with only one of the 2GB Sims in the secondary slot. Im running Win 7 Ultimate So I know its not an OS issue. This BIOS is one of the most standard non changeable BIOS I have ever seen. I am at a total loss as to why it wont read the 4GB SIMS in the second Slot. or together in both slots since they are matched pair. I have seen multiple posts with this same issue all over the internet but no solutions. Even the Motherboard on my unit is the Quenta 3610 withthe PM45 Chipset which uses Both DDR2 and DDR3 RAM and is supposed to be upgradeable to 8GB. I dont understand is it a BIOS Limitation that HP Hosed up?

 

I maximized my ram when I first got mine without issue. But I used the exact same ram as the OEM.

 

I've been running into systems that used DDR3 when it was brand new to the market, then trying to upgrade them now with the RAM that you can get new seems to not work that well. You might have to try some slower DDR3 with looser timings.

At least you can upgrade yours, I wasn't spending over 100 dollars on 8GB of DDR2 for mine