20 Most Recent HP Compaq 6720s Notebook - Page 5 Questions & Answers

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01293339/c01293339.pdf
this PDF should include step by step instructions on how to remove the cover (includes pictures)
hope it helps, good luck!

You might have an extremely slow boot up. Try tapping F8 the next time you boot to start up in Safe Mode. If Safe Mode boots up faster then you should try removing some of the Startup items that you find when you run msconfig from the Run box.

Yes the blue light on there indicates the wireless is definitely on. It just does not light up if it is off.

Please make sure you rate my answer 4 thumbs up, it is extremely important to me. I would be forever grateful if you could do so. If you need more help on this question please just respond to my answer here and I will get right back to you.

Thanks,
Tim

It is a backlight problem, caused by either a faulty inverter or a faulty CCFL lamp. Please click on this link to for a solution :-
Normal 0 http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Just update your system, normally drivers are installed automatically.

change the cable

the issue might be with the charger which is not supplying power or is with the charger port in the laptop itself,it might be loose or it might be completely broken...try with different working charger which is working for another same kind o laptop if you can if it turns on the laptop replace or repair the charger..if the other charger also don't work it should be the port take it to the hp store to get it repaired...
hope it works

Hi you have to remove the 1st memory and you might see the other slot on the underneath.
Please see picture below

after removing teh 1st one check if theres another slot underneath the 1st slot. I checked the user manual and it did show that it has 2 memory slot and most laptop does have 2 slots.
You may also want to check this manual for reference
Please click here
Hope This help you

Hi,
You can reffer to the below mentioned link.
http://support.microsoft.com/kb/812492

Hello,

• "Windows could not start because the following file is missing or corrupt:
  <Windows root>\system32\hal.dll.
  Please re-install a copy of the above file."
  
  
• "<Winnt_root>\System32\Hal.dll missing or corrupt:
  Please re-install a copy of the above file."
  
  
• "Cannot find \Windows\System32\hal.dll"
  
  
• "Cannot find hal.dll"

The "missing or corrupt hal.dll" error displays shortly after the computer is first started. Windows XP has not yet fully loaded when this error message appears. CauseCauses of the "missing or corrupt hal.dll" error include, naturally, a damaged hal.dll DLL file or a hal.dll file that has been deleted or moved from its intended location.Additional causes may include a damaged or missing boot.ini file or possibly a physically damaged hard drive.

Please let me know you have any further questions or concerns.

Thanks.

HI, do you still have the recovery disc for your computer? . you can try going to recovery console by:

• press F8 after starting your computer
• the choose last known good configuration

usually that will load the computer back the last time you were using it.
Cheers!!!

Have you tried both memory modules in the laptop seperately?
Does the computer post anything at all? Do you get flashing lights on the laptop?

As sound is coming to external speaker then need to check the connection or change your laptop speakers.

Hi:
Your problem doesn't state what driver or device isn't working on your HP compaq 6720s, but all drivers for your laptop can be downloaded from www.hp.com for free. click on the support tab, type in your model number and you can download all of them.!

~ What is the Operating System? PC or MAC? ~ Check air vents and air filter are cleaned ~ Check fan if its working ~ Use laptop 4 hours max per day ~ If you want to use it beyond 4 hours, have it rested for 15-30 minutes intervals

its the button on the left-next to the power button-is the wireles icon in blue on it-cantb be missed

try upgrade the memory module.

It sounds as if the battery is too low to power the unit on.
Firstly insert the battery. When you plug the PSU into the machine does a charging light turn on? If not then check the fuse in the mains plug as it may have blown. If the fuse is OK then you may have a defective PSU, although the motherboard could also be defective. Try a new PSU to determine if which component is faulty.
Now remove the battery and insert the PSU. Will the machine turn on or do any power lights illuminate? If power lights illuminate and the machine will not turn on then I would suggest the motherboard is at fault. If the machine turns on briefly the turns off before displaying the splash screen then I would suggest the RAM, CPU or motherboard is at fault.
If the unit works without the battery installed then it is probably a battery problem, although it is possible the charging circuit n the motherboard is fried.
Hope this helps,
www.PuterCare.com

That depends on how good you are at getting to this motherboard, do yo have the tools to remove the old one without damaging the motherboard. Having a soldering iron is not enough. You need tools to remove Old solder to de-solder the connection without damaging the board. Because these are multilayer boards it's not easy to see all the connections it actually makes. It can be replaced, but I recommend that if you don't have a hot air station that you take it to a shop and have the repair done. Otherwise your may end up with a door stop for a computer. Good Luck