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I did an upgrade install in windows technical preview x86 over windows 7 on an ancient (2001) laptop. The technical preview ran, but had terrible video performance. So I modded an old Vista driver so that it would install, and give me similar video performance as when the machine was running win 7.

Hence, for everything that follows, I am running win technical preview with a modded graphics driver. (recipe for disaster ...)

The originally installed MP 1.7 would not start. I then did an upgrade install of the patched version of 1.9. Received an error that the database was NOT successfully upgraded.

Tried to run MP 1.9. Came up successfully, but would not play videos (error message saying video could not be played). Encountered BSODs while navigating. BSODs came seem to be related to graphics card driver /service.

A lttle investigation showed that the LAV filters had not been registered. I manually downloaded and installed the LAV 0.63 filters.

Videos now play. However, still getting BSODs occasionally while navigating (not watching videos). Applied registry patch for Video_TDR errors and things seem to work.....

For me, possible open questions

1. why did the database fail to upgrade,
2. why did the LAV filters fail to register?

Great work to the MP team!

Mark

<blockquote data-quote="mtp3" data-source="post: 1103475" data-attributes="member: 115943">I did an upgrade install in windows technical preview x86 over windows 7 on an ancient (2001) laptop.&nbsp; The technical preview ran, but had terrible video performance.&nbsp; So I modded an old Vista driver so that it would install, and give me similar video performance as when the machine was running win 7.Hence, for everything that follows, I am running win technical preview with a modded graphics driver. (recipe for disaster ...)&nbsp;The originally installed MP 1.7 would not start.&nbsp;&nbsp; I then did an upgrade install of the patched version of 1.9.&nbsp; Received an error that the database was NOT successfully upgraded.Tried to run MP 1.9.&nbsp; Came up successfully, but would not play videos (error message saying video could not be played).&nbsp; Encountered BSODs while navigating.&nbsp; BSODs came seem to be related to graphics card driver /service.A lttle investigation showed that the LAV filters had not been registered.&nbsp; I manually downloaded and installed the LAV 0.63 filters.Videos now play.&nbsp;&nbsp; However, still getting BSODs occasionally while navigating (not watching videos).&nbsp;&nbsp; Applied registry patch for Video_TDR errors and things seem to work.....For me, possible open questions1. why did the database fail to upgrade,2. why did the LAV filters fail to register?Great work to the MP team!Mark</blockquote>

[QUOTE="mtp3, post: 1103475, member: 115943"] I did an upgrade install in windows technical preview x86 over windows 7 on an ancient (2001) laptop. The technical preview ran, but had terrible video performance. So I modded an old Vista driver so that it would install, and give me similar video performance as when the machine was running win 7. Hence, for everything that follows, I am running win technical preview with a modded graphics driver. (recipe for disaster ...) The originally installed MP 1.7 would not start. I then did an upgrade install of the patched version of 1.9. Received an error that the database was NOT successfully upgraded. Tried to run MP 1.9. Came up successfully, but would not play videos (error message saying video could not be played). Encountered BSODs while navigating. BSODs came seem to be related to graphics card driver /service. A lttle investigation showed that the LAV filters had not been registered. I manually downloaded and installed the LAV 0.63 filters. Videos now play. However, still getting BSODs occasionally while navigating (not watching videos). Applied registry patch for Video_TDR errors and things seem to work..... For me, possible open questions 1. why did the database fail to upgrade, 2. why did the LAV filters fail to register? Great work to the MP team! Mark [/QUOTE]