Blue screen is probably related to your graphics card driver or setting.

You use an ethernet modem then ... that's good.

Some suggestions:

* Tip: Purge the Downloads Queue!

* After opening LW wait 10 to 20 mins before using. Let it settle down 1st.

* Go to LW's prefs>Speed & tick disable Ultrapeer Cap. & press apply button.
* Set both uplds & downlds to autoclear.
* Close all LW windows you don't need open at that time.
* If you're not in front of your comp, then hide LW in the program bar.

* Don't use the Resume button on all incomplete files. This can have side-fx such as affect LW's connection quality. This will also stress LW & your comp. If you use Resume/Find sources then just apply it to a couple or so at one time.