BSOD mostly on startup and a few times while currently using my laptop

► Install Service pack 1.

Code:

Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7600.17118.amd64fre.win7_gdr.120830-0334

► Update Broadcom 802.11g Network Adapter - Dell Wireless 1390 WLAN Mini-Card

Code:

Name    [00000007] Broadcom 802.11n Network Adapter
Driver    c:\windows\system32\drivers\bcmwl664.sys (5.100.249.2, 3.98 MB (4,171,328 bytes), 9/7/2010 7:37 PM)

I dont know the source, sorry Search in Acre's site.

► Update Atheros NIC driver

Code:

Name    [00000011] Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
Driver    c:\windows\system32\drivers\l1c62x64.sys (1.0.0.35, 75.11 KB (76,912 bytes), 9/20/2010 11:45 PM)

Get it from ATHEROS drivers for Microsoft Windows (Atheros?????)

► Free up the startup.

1. Click on the Start button
2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
3. Select the “Startup” tab.
4. Deselect all items other than the antivirus.
5. Apply > OK
6. Accept the restart.

Let us know the results.

Learn how to install Windows 7 Service Pack 1 (SP1)

upgrade the network driver:

Download the network card driver from manufactuer's website.
Then reinstall the driver: L1c62x64.sys

1. Click the Start Button, type "devmgmt.msc" (without quotation marks) in the Start Menu Search box and press Enter.
2. Double click to expand "Network adaptors".
3. Right click your network card and click Uninstall.
4. Check "Delete driver software for this device" check box, click OK.
5. Restart the computer
6. If windows does not auto configure the appropriate drivers at startup, install the downloaded one manually.

It should not run slower.

Free up the startup.

1. Click on the Start button
2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
3. Select the “Startup” tab.
4. Deselect all items other than the antivirus.
5. Apply > OK
6. Accept the restart.

Run disc cleanup. Disk Cleanup - Open and Use

BTW, is it crashing anymore?

If you have driver verifier enabled, it will definitely slow the PC down. not only slow, but a bit heavy and laggy.