Built-in camera abnormal

I have an Asus Eee Pc 1005HAG win7/32bit,with In-Built Camera,for the last three months i have been trying to ascertain why its abnormal since i bought it,i have searched extensively online,the manufacturers website,forums etc unfortunately i could not find a fix,though am not a computer savvy i have conducted basic practical investigation on my computer,below is what i have discovered;
1-in BIOS,On-board devices,the Camera option is 'ENABLED'
2-in Device Manager,camera does not show up,its not attached anywhere on the 'tree' even when flags are open!
3-dropdown on Imaging Device under Device Manager,there is no USB 2.0 ...Webcam attached,instead it has Lexmark x422 device which has a problem indicator,a yellow '!' exclamatory mark,further investigations led me to conclude that it had a driver problem,code error 10 and could not start.the solution given to fix this driver problem was to reinstall it.i did reinstall and i updated it following the recommended procedure,the screen message i got was that windows had determined that the driver software for the device Lexmark x422 was up to date but the problem indicator did not erase,and on troubleshooting again,the message i got was that windows had found the correct drivers for the device on the computer but encountered an error and could not install the drivers.i repeated these operations a couple of times but it was never fixed.
4-from the advice given on Asus Support,Downloads site,i found the Camera download for my edition eee1005hag,which i downloaded (AZURUWARE) successfully.i went a step further to download the Camera drivers for Asus Eee Pc 1005HA.but the camera was never fixed and camera/webcam could not show up in device manager.
5-while i was executing a compatibility troubleshoot an error occurred with a screen message as below;
An unexpected error has occurred. the troubleshooting wizard can't continue.

Package ID:- PCW Diagnostic
Path:- C:\Windows\diagnostics\system\pcw
Error code:- 0x80131700
Source:- Engine
User:- xx xx xx
Context:- Elaveted

this remains unresolved as well!

now am appealing to anyone out there to join hands in resolving these issues,

i will appreciate all effort.

philipkyk