Windows Startup Fails - Isapnp.sys Missing Or Corrupted
Mar 18, 2012
Laptop configuration:
Windows 7 64 bit Professional
Linux 11.04 (dual boot)
i7, 2Gb RAM.
The computer has been running fine for the last year. I am giving the series of events below:(Please note that linux is still running fine, so this cant be a hardware problem)##Today, when I started my laptop, it failed to start. It showed no error, its just that after the windows logo comes, it froze in a black screen with mouse cursor visible.###I forced restart, and then it gave me the option to repair, because windows was unable to start. ###I chose repair, and the repair program started "detecting problems". Then it gave me the option to either do a system restore or cancel. I chose system restore. ###I let it run for 3 hrs., but it seemed to make no progress, so I forced restart. (It didnt let me cancel also, said that current recovery process cannot be canceled)###I tried to enter safe mode this time, and was successful. I went to system restore, where it showed me an option to restore to an older point where I hadnt uninstalled a game (Assassin's creed Revelations)### For some reason, I didnt restore the system. I thought that maybe all this was a temporary problem. So I restarted normally, and tried starting windows the normal way. It failed. After the windows logo comes, there is a black screen with mouse pointer for a few seconds, then it automatically restarts. (this is what happened then, and also happens now)### I tried entering safe mode, but failed. Same thing started happening in safe mode also. Even though I opened safe mode successfully just a while ago.### I tried many times to start windows in safe mode and all its variants, but to no avail.### I tried many times with the startup repair option, but also to no avail. It always seemed that it would go on forever.
I dont have the windows 7 installation Cd or even the recovery CD. (how bad is that?). So I borrowed a recovery CD from a friend, who also has windows 7 64 bit, and booted from it. It said that the driver windows/system32/driver/isapnp.sys was missing or corrupt. It says that I need the installation CD and select repair. But I dont have the installation CD from which my windows was installed. I have two questions:
1. If I somehow ask around and get someone else's windows 7 64 bit installation disk, will it work? (Someone else's disk, from which my windows was not installed). I dont need to put in the key or something, do I? I dont even know the key. The laptop came with windows installed and everything.
2. Can I simply replace the file isapnp.sys in windows/system32/drivers folder through linux? I asked my friend to give me his isapnp.sys file (which was of the same size as mine, he also ran win7 64 bit). Replaced it, but it doesnt work. Is there some other place I should replace it too, or this method is not supposed to work?
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May 17, 2011
Tech Support Guy System Info Utility version 1.0.0.1
OS Version: Microsoft Windows 7 Home Premium , Service Pack 1, 64 bit
Processor: AMD Athlon(tm) II X2 240 Processor, AMD64 Family 16 Model 6 Stepping 2
Processor Count: 2
RAM: 2815 Mb
[code]....
Antivirus: The Shield Deluxe Antivirus, Updated and Enabled DISPLAY MODEL: All I got with it was mouse and power cord On Startup, I get icons for the Administrator and Standard user. Clicking on the Administrator gives me a desktop with an on-screen keyboard; the computer keyboard disabled, and a panel saying,"FAILED, The application has failed to start." Going back and clicking on the Standard User icon gets me running for the most part. Here's the BIG problem. Every time I try to install any program, the User Account Control box drops down and asks for the Administrator Password, plus the question,"Do you want to allow the following programs to make changes to your computer?" You click "Yes", but, since no one is in the Administrator office, your installation comes to a halt. This blocks "Install" and "Uninstall". I get lots of messages I need Adobe Flash Player. I've trie over and again to install it, going to Windows 32 bit, but can't uninstall my previous tries. It will always download, and that's all. I've tried to install my digital camera's CD, but can't.
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desktop:
Drive C: W7 Home Premium 80GB NTFS (IDE)
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Drive F and G DVDR's
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