I searched over the forums and finally I found how can I find why my computer goes crazy, unfortunately the options below may be used only for Windows 7.
Perhaps some of you will say that when an error occurs I will search on Google and find out how to fix this. It is better so, but what happens if the error can have many causes? This is where these methods of finding the cause of errors, methods that are easy to apply but we will tell you exactly what we want to know, and some cases of error.
A good method of finding errors caused by drivers is found in Event Viewer. To open Event Viewer, follow the steps to come:

Step 1: Go to Start -> type in the search box ev and then press Enter;
Step 2: Look under Custom at the Administrative logs;
Here you can find the problem with drivers which can occurs when you start your computer.
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In this article I try to fix the problem when the Nexus One owners try to connect from Wired or Wireless and the connection cannot be done. To fix this issue you should update your Nexus One phone with a kernel that supports tethering, and after you update your kernel you can connect to Wireless and Wired.

Download the kernel update from here.
If you’re running on a user you should try to install like default installation.
Fix Nexus One problem
Step 1: First run a userdebug or eng build. This update won’t run on the user build, you will get verification failed;
Step 2: Download the update from here;
Step 3: Now you should copy the file to phone SD cars, but first rename the file into update.zip;
Step 4: In case that you have adb, try adb reboot recovery(more details for abd here);
Step 5: If you don’t have adb try the next steps:
- Power off your phone
- Turn it on whilst holding the trackball down
- At the boot screen, use the volume keys to select bootloader then press the power button to select
- At the next screen, select recovery and press the power button to select it
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While you play a game, or install a new software, or upgrade a driver, or restart your computer, or…..in Windows 7, appear a BSOD(Black Screen of Death) or a BSOD(Blue Screen of Death). In this article you can find the solution to solve these screens of death for Windows 7.
Among the many errors that occur in Windows and which can be solved here, at least a part of them, this error occurred which cannot be neglected.
Most times the BSOD(Black Screen of Death) in Windows 7 appear when you logging on, and it seems that this error occurs after the latest Microsoft security updates released on November 25th, have caused problems for some Windows 7 users creating a BSOD(Black Screen of Death).
To solve the Black Screen Of Death(BSOD) in Windows 7 you can follow the next steps to fix the BSOD screen, but these are available in case that the BSOD not appear everytime.

If appear the BSOD(Black Screen of Death) screen in Windows 7, follow these steps to fix this error:
Step 1: Restart your computer;
Step 2: Logon into your account, or into account that appear this BSOD;
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Many error appears in Windows 7, and some of these are very bad for your computers. And for this reason before to install a new software, or install a new component on your computer, or upgrade a new driver you should create a restore point for your system.
In this article you can find the steps to create a restores point to an earlier date, and this can help you when you have problem with your computer, because you can restore your computer to an earlier date when your computer has worked well.

Steps to create a restored point for Windows 7
Step 1: Go to Start Menu and right-click on Computer and then click on Properties;
Step 2: On Control Panel click on System Protection;
Step 3: On System Properties windows go to System Protection tab;
Step 4: Click on Create button;
Step 5: Type a description that can be easily identify later;
Step 6: Click the Create button, and then the system will create the restore point;
Step 7: When the process is finished, you’ll get a message saying it’s completed successfully;
If you try to open a file and you receive an access denied messages, you should verify two option: first you should see if you have permissions to access the file, or you should check if the file is encrypted or not.

How to check the permissions of the file or of the folder
Step 1: Right click on the file or folder, and then click Properties;
Step 2: Click the Security tab;
Step 3: Under Group or user names, click your name to see the permissions you have;
How to check if the file is encrypted
Step 1: Right click the file, and then click Properties;
Step 2: Click the General tab, and then click Advanced;
If the Encrypt contents to secure data check box is selected, you need the certificate that was used to encrypt the file to open it.
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