Surface pro system reset failure

I am currently experiencing some difficulties with my surface pro 4 so am trying to reset it to factory settings. However, every time i reset from within windows, it prepares, then restarts to the blue reset screen, gets to around 35%, then tells me there was an issue. I have tried a number of the standard fixes for this: resetting the recovery agent, scanning the windows directory etc. i've tried the config -> ren system system.001 method, but it says that it is being used by another process.

when i inspect the reset log file, i get quite a few errors beofre it ditches (Below)... anyone have any thoughts as to what's going on here? i did a system reset a year or so ago without any issues. fyi, i dont have a usb drive and am on lockdown at the moment, so have no way of booting from an external drive.

2020-04-08 10:45:09, Error                        StartTrace failed. Error: 0x000000B7
2020-04-08 10:45:10, Error                        0x80070003 in PushButtonReset::RegKey::HasValue (base\reset\util\src\registry.cpp:187): Failed to load subkey at [Microsoft\Windows\Signature][gle=0x00000002]
2020-04-08 10:45:10, Error                        0x80070003 in PbrGetRestoreToBaselineVal (base\reset\engine\scenario\src\sensetargetos.cpp:63): Does not find registry key of PushButtonReset[gle=0x00000002]
2020-04-08 10:45:13, Error                        0x8007000d in PushButtonReset::Extensibility::ParseBareMetalConfig (base\reset\engine\scenario\src\extensibility.cpp:443): /Reset/SystemDisk/RestoreFromIndex must be specified with <RecoveryImagePartition> and <RecoveryImagePath>
2020-04-08 10:45:14, Error                        0x800f0970 in PushButtonReset::OpClearStorageReserve::Commit (base\reset\engine\operations\src\clearstoragereserve.cpp:96): Failed to get storage reserve manager loader
2020-04-08 10:45:56, Error                        DeletePath: Failed to obliterate [C:\$WINDOWS.~BT] after 3 tries; GLE = 0x20[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::OpExecSetup::SetupPlatformDLL::Load (base\reset\engine\operations\src\execsetup.cpp:298): Failed to clean up existing setup footprint[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::OpExecSetup::Commit (base\reset\engine\operations\src\execsetup.cpp:814): Failed to load SetupPlatform.dll[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::ResetScenario::DoConstruct (base\reset\engine\scenario\src\resetscenario.cpp:591): Failed to commit setup operation[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::ResetScenario::InternalConstruct (base\reset\engine\scenario\src\resetscenario.cpp:227): Failed to construct operation queue for scenario[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::Scenario::Construct (base\reset\engine\scenario\src\scenario.cpp:223): Subclass failed to construct reset operation queue[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::Session::Construct (base\reset\engine\session\src\session.cpp:736): Scenario failed to construct operation queue[gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in PushButtonReset::Session::Construct (base\reset\engine\session\src\session.cpp:617): [gle=0x00000020]
2020-04-08 10:45:56, Error                        0x80070020 in ResetPrepareSession (base\reset\engine\dll\clientapi.cpp:546): Failed to construct session object[gle=0x00000020]
2020-04-08 10:46:19, Error                        0x80004005 in srResetMain (base\reliability\recovery\sysreset\sysreset.cpp:1573): [gle=0x0000007a]
2020-04-08 10:46:19, Error                        wWinMain: srResetMain failed: 0x80004005
2020-04-08 10:46:19, Error                        CopyFile(X:\SysResetTrace-Tel-Merge.etl, C:\$WINDOWS.~BT\Sources\Panther\SysResetTrace-Tel-Merge.etl) failed. Error: 0x00000003