My HP laptop will not allow me to GO into programs, i cannot access the internet, i have no address bar in internet explorer, In outlook it displays what emails have been received but i can't read them

This happened a few months ago i just turned it off and left it, i had a play with it and tried to fix it but i lost everything , Is it possible to get this information back, man i suck with computers, i just thought i would be able to fix it by myself, i took it to a TECHNICIAN, but my laptop sat on their shelf for a month and i got fed up with waiting now i turn here, HELP ME PLEASE

Specs
Hp compaq nx9010
Windows xp Operating System
Windows 2003 Professional Edition
If any of that helpsSome things to try.
1. Error Checking- This takes about 30 minutes.
Start - my computer - right click local disk (C) - properties - Tools Tab -
Error checking section - Check now - check mark both boxes - Start -
This requires a RESTART to begin.

2. Start - Run - type - sfc /scannow - OK
Don't forget the space between c and /
You will need the Recovery CD that came with your PC if any thing is found wrong.
Don't insert unless asked for.

You can check to see if you have a restore point before your trouble started.
Start - all programs - accessories - system tools - system restore.

For your Outlook Express Email I will give what I picked up a while back
For were your Outlook emails are located on your PC.
The easiest way to locate Outlook Express' email store is to ask Outlook Express. Open it up, and then in Tools, OPTIONS, on the Maintenance tab there's a button labeled Store Folder. Click that and it will tell you the folder containing your email folder.
Highlight the address and right click it and left click copy.
Start - Run - Paste in the address - click OK
At the left top - Edit - Select all - right click your highlighted files - send to your CD & DVD and put on a CD
If their not their. than I don't know.
Copy the entire contents of that directory to a floppy, CD-ROMHow dfoes this laptop connect to the web ? ?
Wired or wireless ? ?
More info on the machine and what happened prior to this and someone will be along shortly...My laptop is wired- broadband
It all started when one day my father was playing around with it i returned to the computer and the address bar on internet explorer had disapeared, had a play around with thr tools on the top bar but to no avail. i turned the computer off and left it, i few weeks later i tried again but this time around a blue screen with a error MESSAGE came up, unfortunately i cant recall the message. Thinking i was a computer whiz i went into the reboot system and cleared everything and i mean everything i was so gutted, however i was able to get in and use a few applications, but i am unable to access the web, and emails and stuff.
What kind of info do you need about the machine?I did the error check and that went through however, this message has now come up widows couldnot start because the folowing file is missing or corupt: \system32\ntoskrnl.exe. Please re install a copy of the above file.

Is that the operating systems *censored*, or the driver recovery disc?
What do i do next?